Pirelli say the prototype tyre tested in Canada will no longer be introduced

Italian firm say teams failed to reach unanimous agreement

By William Esler.   Last Updated: 14/06/13 12:10pm

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Pirelli have announced their rubber will remain unchanged after the teams failed to unanimously agree to introduce the prototype tyre tested in Canada.

Running of the development rubber was limited due to wet conditions during practice in Montreal and instead Pirelli will now change the tyre production process in an effort to prevent the delaminations witnessed in the first part of the season.

"The tyre construction will remain unchanged, contrary to Pirelli's initial plans," the Italian manufacturer announced in a statement.

"This decision is due to the fact that the new tyres, which were brought to the Friday free practice sessions in Canada, could not be tested sufficiently due to rain - and that the teams failed to agree unanimously about introducing the changes.

"Instead a change in the tyre production process should now ensure that the delamination issue has been addressed."

Pirelli also revealed the compounds that will be taken to the next three races in Great Britain, Germany and Hungary.

Unlike in 2012, there will be no step between the compounds at Silverstone with the two hardest compounds in the rage - the orange-marked hard and the white-marked medium - brought to the Northamptonshire venue. Pirelli say these choices "will be best suited to the high-energy demands of the track."

The following week at the Nurburgring the soft (yellow) and medium tyres will be used as the manufacturer say "the tarmac roughness is very low, so plenty of mechanical grip from the tyres is required."

Last year's race at the Hungaroring was dominated by tyre preservation and thus for the visit at the end of July, both compounds have been moved a step harder with the medium and hard tyres chosen.

2013 tyre choices
Australia - Supersoft, Medium
Malaysia - Medium, Hard
China - Soft, Medium
Bahrain - Medium, Hard
Spain - Medium, Hard
Monaco - Supersoft, Soft
Canada - Supersoft, Medium
Great Britain - Medium, Hard
Germany - Soft, Medium
Hungary - Medium, Hard

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